To turn the Power Pack on, plug it in and flip the switch. If everything is good to go, you'll see the green LED indicator light up on the front of the pack. When Power Pack is plugged in, it will charge your 12 Sphero SPRK+ robots and power the cooling fan to make sure you're always ready to roll!
The blue lights on the charging bases will blink while your robots are in the process of charging, and the lights will turn solid blue when they are fully charged. Charging SPRK+ from empty to full battery takes approximately 3 hours, and SPRK+ can last an hour or more on a full charge. Make sure each SPRK+ sits heavy side down in their charging cradles to ensure proper charging.
We advise users to charge their robots with the lid open to offer optimal cooling (see Using the Power Pack), but there is ventilation built into the case so that it can safely charge with the lid closed.
Overheating occurs when the case is powered on, and the thermal switch measures above 50 degrees Celsius, which can happen in extreme conditions or when the cooling vents are blocked. Power Pack will let you know when it's overheating with the red LED light on the front of the case.
Temperatures above 50 degrees Celsius can harm the robots and power pack itself (see Using the Power Pack). Power to the robot charging cradles will automatically be disabled to eliminate the heat source, but the power to the fan cooling system remains on in order to quickly cool the pack. Once the temperature measures below 40 degrees Celsius, power is automatically restored to the robot charging cradles and the pack will return to its normal Power On mode.